4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
12 select HAVE_IRQ_EXIT_ON_IRQ_STACK
14 select HAVE_PERF_EVENTS
15 select PERF_USE_VMALLOC
17 select HAVE_ARCH_MMAP_RND_BITS if MMU
18 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
19 select HAVE_ARCH_SECCOMP_FILTER
20 select HAVE_ARCH_TRACEHOOK
21 select HAVE_CBPF_JIT if !CPU_MICROMIPS
22 select HAVE_FUNCTION_TRACER
23 select HAVE_DYNAMIC_FTRACE
24 select HAVE_FTRACE_MCOUNT_RECORD
25 select HAVE_C_RECORDMCOUNT
26 select HAVE_FUNCTION_GRAPH_TRACER
28 select HAVE_KRETPROBES
29 select HAVE_SYSCALL_TRACEPOINTS
30 select HAVE_DEBUG_KMEMLEAK
31 select HAVE_SYSCALL_TRACEPOINTS
32 select ARCH_HAS_ELF_RANDOMIZE
33 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
34 select RTC_LIB if !MACH_LOONGSON64
35 select GENERIC_ATOMIC64 if !64BIT
36 select HAVE_DMA_CONTIGUOUS
37 select HAVE_DMA_API_DEBUG
38 select GENERIC_IRQ_PROBE
39 select GENERIC_IRQ_SHOW
40 select GENERIC_PCI_IOMAP
41 select HAVE_ARCH_JUMP_LABEL
42 select ARCH_WANT_IPC_PARSE_VERSION
43 select IRQ_FORCED_THREADING
45 select HAVE_MEMBLOCK_NODE_MAP
46 select ARCH_DISCARD_MEMBLOCK
47 select GENERIC_SMP_IDLE_THREAD
48 select BUILDTIME_EXTABLE_SORT
49 select GENERIC_CLOCKEVENTS
50 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
51 select GENERIC_CMOS_UPDATE
52 select HAVE_MOD_ARCH_SPECIFIC
55 select MODULES_USE_ELF_REL if MODULES
56 select MODULES_USE_ELF_RELA if MODULES && 64BIT
57 select CLONE_BACKWARDS
58 select HAVE_DEBUG_STACKOVERFLOW
59 select HAVE_CC_STACKPROTECTOR
60 select CPU_PM if CPU_IDLE
61 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
62 select ARCH_BINFMT_ELF_STATE
63 select SYSCTL_EXCEPTION_TRACE
64 select HAVE_VIRT_CPU_ACCOUNTING_GEN
65 select HAVE_IRQ_TIME_ACCOUNTING
66 select GENERIC_TIME_VSYSCALL
67 select ARCH_CLOCKSOURCE_DATA
68 select HANDLE_DOMAIN_IRQ
69 select HAVE_EXIT_THREAD
70 select HAVE_REGS_AND_STACK_ACCESS_API
71 select HAVE_ARCH_HARDENED_USERCOPY
73 menu "Machine selection"
80 bool "Generic board-agnostic MIPS kernel"
84 select CLKSRC_MIPS_GIC
86 select CPU_MIPSR2_IRQ_VI
87 select CPU_MIPSR2_IRQ_EI
89 select DMA_PERDEV_COHERENT
93 select MIPS_CPU_SCACHE
95 select MIPS_L1_CACHE_SHIFT_7
97 select PCI_DRIVERS_GENERIC
101 select SYS_HAS_CPU_MIPS32_R1
102 select SYS_HAS_CPU_MIPS32_R2
103 select SYS_HAS_CPU_MIPS32_R6
104 select SYS_HAS_CPU_MIPS64_R1
105 select SYS_HAS_CPU_MIPS64_R2
106 select SYS_HAS_CPU_MIPS64_R6
107 select SYS_SUPPORTS_32BIT_KERNEL
108 select SYS_SUPPORTS_64BIT_KERNEL
109 select SYS_SUPPORTS_BIG_ENDIAN
110 select SYS_SUPPORTS_HIGHMEM
111 select SYS_SUPPORTS_LITTLE_ENDIAN
112 select SYS_SUPPORTS_MICROMIPS
113 select SYS_SUPPORTS_MIPS_CPS
114 select SYS_SUPPORTS_MIPS16
115 select SYS_SUPPORTS_MULTITHREADING
116 select SYS_SUPPORTS_RELOCATABLE
117 select SYS_SUPPORTS_SMARTMIPS
118 select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
119 select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
120 select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
121 select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
122 select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
123 select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
126 Select this to build a kernel which aims to support multiple boards,
127 generally using a flattened device tree passed from the bootloader
128 using the boot protocol defined in the UHI (Unified Hosting
129 Interface) specification.
132 bool "Alchemy processor based machines"
133 select ARCH_PHYS_ADDR_T_64BIT
137 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
138 select SYS_HAS_CPU_MIPS32_R1
139 select SYS_SUPPORTS_32BIT_KERNEL
140 select SYS_SUPPORTS_APM_EMULATION
142 select SYS_SUPPORTS_ZBOOT
146 bool "Texas Instruments AR7"
148 select DMA_NONCOHERENT
152 select NO_EXCEPT_FILL
154 select SYS_HAS_CPU_MIPS32_R1
155 select SYS_HAS_EARLY_PRINTK
156 select SYS_SUPPORTS_32BIT_KERNEL
157 select SYS_SUPPORTS_LITTLE_ENDIAN
158 select SYS_SUPPORTS_MIPS16
159 select SYS_SUPPORTS_ZBOOT_UART16550
164 Support for the Texas Instruments AR7 System-on-a-Chip
165 family: TNETD7100, 7200 and 7300.
168 bool "Atheros AR231x/AR531x SoC support"
171 select DMA_NONCOHERENT
174 select SYS_HAS_CPU_MIPS32_R1
175 select SYS_SUPPORTS_BIG_ENDIAN
176 select SYS_SUPPORTS_32BIT_KERNEL
177 select SYS_HAS_EARLY_PRINTK
179 Support for Atheros AR231x and Atheros AR531x based boards
182 bool "Atheros AR71XX/AR724X/AR913X based boards"
183 select ARCH_HAS_RESET_CONTROLLER
187 select DMA_NONCOHERENT
194 select SYS_HAS_CPU_MIPS32_R2
195 select SYS_HAS_EARLY_PRINTK
196 select SYS_SUPPORTS_32BIT_KERNEL
197 select SYS_SUPPORTS_BIG_ENDIAN
198 select SYS_SUPPORTS_MIPS16
199 select SYS_SUPPORTS_ZBOOT_UART_PROM
202 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
205 bool "Broadcom Generic BMIPS kernel"
207 select NO_EXCEPT_FILL
213 select BCM6345_L1_IRQ
214 select BCM7038_L1_IRQ
215 select BCM7120_L2_IRQ
216 select BRCMSTB_L2_IRQ
218 select DMA_NONCOHERENT
219 select SYS_SUPPORTS_32BIT_KERNEL
220 select SYS_SUPPORTS_LITTLE_ENDIAN
221 select SYS_SUPPORTS_BIG_ENDIAN
222 select SYS_SUPPORTS_HIGHMEM
223 select SYS_HAS_CPU_BMIPS32_3300
224 select SYS_HAS_CPU_BMIPS4350
225 select SYS_HAS_CPU_BMIPS4380
226 select SYS_HAS_CPU_BMIPS5000
228 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
229 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
230 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
231 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
233 Build a generic DT-based kernel image that boots on select
234 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
235 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
236 must be set appropriately for your board.
239 bool "Broadcom BCM47XX based boards"
243 select DMA_NONCOHERENT
246 select SYS_HAS_CPU_MIPS32_R1
247 select NO_EXCEPT_FILL
248 select SYS_SUPPORTS_32BIT_KERNEL
249 select SYS_SUPPORTS_LITTLE_ENDIAN
250 select SYS_SUPPORTS_MIPS16
251 select SYS_HAS_EARLY_PRINTK
252 select USE_GENERIC_EARLY_PRINTK_8250
254 select LEDS_GPIO_REGISTER
258 Support for BCM47XX based boards
261 bool "Broadcom BCM63XX based boards"
266 select DMA_NONCOHERENT
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_BIG_ENDIAN
270 select SYS_HAS_EARLY_PRINTK
274 select MIPS_L1_CACHE_SHIFT_4
276 Support for BCM63XX based boards
283 select DMA_NONCOHERENT
289 select PCI_GT64XXX_PCI0
291 select SYS_HAS_CPU_NEVADA
292 select SYS_HAS_EARLY_PRINTK
293 select SYS_SUPPORTS_32BIT_KERNEL
294 select SYS_SUPPORTS_64BIT_KERNEL
295 select SYS_SUPPORTS_LITTLE_ENDIAN
296 select USE_GENERIC_EARLY_PRINTK_8250
298 config MACH_DECSTATION
302 select CEVT_R4K if CPU_R4X00
304 select CSRC_R4K if CPU_R4X00
305 select CPU_DADDI_WORKAROUNDS if 64BIT
306 select CPU_R4000_WORKAROUNDS if 64BIT
307 select CPU_R4400_WORKAROUNDS if 64BIT
308 select DMA_NONCOHERENT
311 select SYS_HAS_CPU_R3000
312 select SYS_HAS_CPU_R4X00
313 select SYS_SUPPORTS_32BIT_KERNEL
314 select SYS_SUPPORTS_64BIT_KERNEL
315 select SYS_SUPPORTS_LITTLE_ENDIAN
316 select SYS_SUPPORTS_128HZ
317 select SYS_SUPPORTS_256HZ
318 select SYS_SUPPORTS_1024HZ
319 select MIPS_L1_CACHE_SHIFT_4
321 This enables support for DEC's MIPS based workstations. For details
322 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
323 DECstation porting pages on <http://decstation.unix-ag.org/>.
325 If you have one of the following DECstation Models you definitely
326 want to choose R4xx0 for the CPU Type:
333 otherwise choose R3000.
336 bool "Jazz family of machines"
339 select ARCH_MAY_HAVE_PC_FDC
342 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
343 select GENERIC_ISA_DMA
344 select HAVE_PCSPKR_PLATFORM
349 select SYS_HAS_CPU_R4X00
350 select SYS_SUPPORTS_32BIT_KERNEL
351 select SYS_SUPPORTS_64BIT_KERNEL
352 select SYS_SUPPORTS_100HZ
354 This a family of machines based on the MIPS R4030 chipset which was
355 used by several vendors to build RISC/os and Windows NT workstations.
356 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
357 Olivetti M700-10 workstations.
360 bool "Ingenic SoC based machines"
361 select SYS_SUPPORTS_32BIT_KERNEL
362 select SYS_SUPPORTS_LITTLE_ENDIAN
363 select SYS_SUPPORTS_ZBOOT_UART16550
364 select DMA_NONCOHERENT
368 select GENERIC_IRQ_CHIP
374 bool "Lantiq based platforms"
375 select DMA_NONCOHERENT
379 select SYS_HAS_CPU_MIPS32_R1
380 select SYS_HAS_CPU_MIPS32_R2
381 select SYS_SUPPORTS_BIG_ENDIAN
382 select SYS_SUPPORTS_32BIT_KERNEL
383 select SYS_SUPPORTS_MIPS16
384 select SYS_SUPPORTS_MULTITHREADING
385 select SYS_HAS_EARLY_PRINTK
392 select PINCTRL_LANTIQ
393 select ARCH_HAS_RESET_CONTROLLER
394 select RESET_CONTROLLER
397 bool "LASAT Networks platforms"
401 select DMA_NONCOHERENT
402 select SYS_HAS_EARLY_PRINTK
405 select PCI_GT64XXX_PCI0
407 select R5000_CPU_SCACHE
408 select SYS_HAS_CPU_R5000
409 select SYS_SUPPORTS_32BIT_KERNEL
410 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
411 select SYS_SUPPORTS_LITTLE_ENDIAN
413 config MACH_LOONGSON32
414 bool "Loongson-1 family of machines"
415 select SYS_SUPPORTS_ZBOOT
417 This enables support for the Loongson-1 family of machines.
419 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
420 the Institute of Computing Technology (ICT), Chinese Academy of
423 config MACH_LOONGSON64
424 bool "Loongson-2/3 family of machines"
425 select SYS_SUPPORTS_ZBOOT
427 This enables the support of Loongson-2/3 family of machines.
429 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
430 family of multi-core CPUs. They are both 64-bit general-purpose
431 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
432 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
433 in the People's Republic of China. The chief architect is Professor
436 config MACH_PISTACHIO
437 bool "IMG Pistachio SoC based boards"
441 select CLKSRC_MIPS_GIC
444 select DMA_NONCOHERENT
449 select MIPS_CPU_SCACHE
453 select SYS_HAS_CPU_MIPS32_R2
454 select SYS_SUPPORTS_32BIT_KERNEL
455 select SYS_SUPPORTS_LITTLE_ENDIAN
456 select SYS_SUPPORTS_MIPS_CPS
457 select SYS_SUPPORTS_MULTITHREADING
458 select SYS_SUPPORTS_RELOCATABLE
459 select SYS_SUPPORTS_ZBOOT
460 select SYS_HAS_EARLY_PRINTK
461 select USE_GENERIC_EARLY_PRINTK_8250
464 This enables support for the IMG Pistachio SoC platform.
467 bool "MIPSfpga Xilinx based boards"
477 select MIPS_CPU_SCACHE
478 select SYS_HAS_EARLY_PRINTK
479 select SYS_HAS_CPU_MIPS32_R2
480 select SYS_SUPPORTS_32BIT_KERNEL
481 select SYS_SUPPORTS_LITTLE_ENDIAN
482 select SYS_SUPPORTS_ZBOOT_UART16550
484 select USE_GENERIC_EARLY_PRINTK_8250
487 This enables support for the IMG University Program MIPSfpga platform.
490 bool "MIPS Malta board"
491 select ARCH_MAY_HAVE_PC_FDC
497 select CLKSRC_MIPS_GIC
499 select DMA_MAYBE_COHERENT
500 select GENERIC_ISA_DMA
501 select HAVE_PCSPKR_PLATFORM
508 select MIPS_CPU_SCACHE
509 select MIPS_L1_CACHE_SHIFT_6
510 select PCI_GT64XXX_PCI0
514 select SYS_HAS_CPU_MIPS32_R1
515 select SYS_HAS_CPU_MIPS32_R2
516 select SYS_HAS_CPU_MIPS32_R3_5
517 select SYS_HAS_CPU_MIPS32_R5
518 select SYS_HAS_CPU_MIPS32_R6
519 select SYS_HAS_CPU_MIPS64_R1
520 select SYS_HAS_CPU_MIPS64_R2
521 select SYS_HAS_CPU_MIPS64_R6
522 select SYS_HAS_CPU_NEVADA
523 select SYS_HAS_CPU_RM7000
524 select SYS_SUPPORTS_32BIT_KERNEL
525 select SYS_SUPPORTS_64BIT_KERNEL
526 select SYS_SUPPORTS_BIG_ENDIAN
527 select SYS_SUPPORTS_HIGHMEM
528 select SYS_SUPPORTS_LITTLE_ENDIAN
529 select SYS_SUPPORTS_MICROMIPS
530 select SYS_SUPPORTS_MIPS_CMP
531 select SYS_SUPPORTS_MIPS_CPS
532 select SYS_SUPPORTS_MIPS16
533 select SYS_SUPPORTS_MULTITHREADING
534 select SYS_SUPPORTS_SMARTMIPS
535 select SYS_SUPPORTS_ZBOOT
536 select SYS_SUPPORTS_RELOCATABLE
539 select ZONE_DMA32 if 64BIT
543 This enables support for the MIPS Technologies Malta evaluation
547 bool "Microchip PIC32 Family"
549 This enables support for the Microchip PIC32 family of platforms.
551 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
555 bool "NEC EMMA2RH Mark-eins board"
559 This enables support for the NEC Electronics Mark-eins boards.
562 bool "NEC VR4100 series based machines"
565 select SYS_HAS_CPU_VR41XX
566 select SYS_SUPPORTS_MIPS16
570 bool "NXP STB220 board"
573 Support for NXP Semiconductors STB220 Development Board.
580 Support for NXP Semiconductors STB225 Development Board.
583 bool "PMC-Sierra MSP chipsets"
586 select DMA_NONCOHERENT
588 select NO_EXCEPT_FILL
590 select SYS_HAS_CPU_MIPS32_R1
591 select SYS_HAS_CPU_MIPS32_R2
592 select SYS_SUPPORTS_32BIT_KERNEL
593 select SYS_SUPPORTS_BIG_ENDIAN
594 select SYS_SUPPORTS_MIPS16
597 select SERIAL_8250_CONSOLE
598 select USB_EHCI_BIG_ENDIAN_MMIO
599 select USB_EHCI_BIG_ENDIAN_DESC
601 This adds support for the PMC-Sierra family of Multi-Service
602 Processor System-On-A-Chips. These parts include a number
603 of integrated peripherals, interfaces and DSPs in addition to
604 a variety of MIPS cores.
607 bool "Ralink based machines"
611 select DMA_NONCOHERENT
614 select SYS_HAS_CPU_MIPS32_R1
615 select SYS_HAS_CPU_MIPS32_R2
616 select SYS_SUPPORTS_32BIT_KERNEL
617 select SYS_SUPPORTS_LITTLE_ENDIAN
618 select SYS_SUPPORTS_MIPS16
619 select SYS_HAS_EARLY_PRINTK
621 select ARCH_HAS_RESET_CONTROLLER
622 select RESET_CONTROLLER
625 bool "SGI IP22 (Indy/Indigo2)"
631 select DEFAULT_SGI_PARTITION
632 select DMA_NONCOHERENT
636 select IP22_CPU_SCACHE
638 select GENERIC_ISA_DMA_SUPPORT_BROKEN
640 select SGI_HAS_INDYDOG
646 select SYS_HAS_CPU_R4X00
647 select SYS_HAS_CPU_R5000
649 # Disable EARLY_PRINTK for now since it leads to overwritten prom
650 # memory during early boot on some machines.
652 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
653 # for a more details discussion
655 # select SYS_HAS_EARLY_PRINTK
656 select SYS_SUPPORTS_32BIT_KERNEL
657 select SYS_SUPPORTS_64BIT_KERNEL
658 select SYS_SUPPORTS_BIG_ENDIAN
659 select MIPS_L1_CACHE_SHIFT_7
661 This are the SGI Indy, Challenge S and Indigo2, as well as certain
662 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
663 that runs on these, say Y here.
666 bool "SGI IP27 (Origin200/2000)"
670 select DEFAULT_SGI_PARTITION
672 select SYS_HAS_EARLY_PRINTK
674 select NR_CPUS_DEFAULT_64
675 select SYS_HAS_CPU_R10000
676 select SYS_SUPPORTS_64BIT_KERNEL
677 select SYS_SUPPORTS_BIG_ENDIAN
678 select SYS_SUPPORTS_NUMA
679 select SYS_SUPPORTS_SMP
680 select MIPS_L1_CACHE_SHIFT_7
682 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
683 workstations. To compile a Linux kernel that runs on these, say Y
687 bool "SGI IP28 (Indigo2 R10k)"
693 select DEFAULT_SGI_PARTITION
694 select DMA_NONCOHERENT
695 select GENERIC_ISA_DMA_SUPPORT_BROKEN
701 select SGI_HAS_INDYDOG
707 select SYS_HAS_CPU_R10000
709 # Disable EARLY_PRINTK for now since it leads to overwritten prom
710 # memory during early boot on some machines.
712 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
713 # for a more details discussion
715 # select SYS_HAS_EARLY_PRINTK
716 select SYS_SUPPORTS_64BIT_KERNEL
717 select SYS_SUPPORTS_BIG_ENDIAN
718 select MIPS_L1_CACHE_SHIFT_7
720 This is the SGI Indigo2 with R10000 processor. To compile a Linux
721 kernel that runs on these, say Y here.
730 select DMA_NONCOHERENT
733 select R5000_CPU_SCACHE
734 select RM7000_CPU_SCACHE
735 select SYS_HAS_CPU_R5000
736 select SYS_HAS_CPU_R10000 if BROKEN
737 select SYS_HAS_CPU_RM7000
738 select SYS_HAS_CPU_NEVADA
739 select SYS_SUPPORTS_64BIT_KERNEL
740 select SYS_SUPPORTS_BIG_ENDIAN
742 If you want this kernel to run on SGI O2 workstation, say Y here.
745 bool "Sibyte BCM91120C-CRhine"
748 select SIBYTE_BCM1120
750 select SYS_HAS_CPU_SB1
751 select SYS_SUPPORTS_BIG_ENDIAN
752 select SYS_SUPPORTS_LITTLE_ENDIAN
755 bool "Sibyte BCM91120x-Carmel"
758 select SIBYTE_BCM1120
760 select SYS_HAS_CPU_SB1
761 select SYS_SUPPORTS_BIG_ENDIAN
762 select SYS_SUPPORTS_LITTLE_ENDIAN
765 bool "Sibyte BCM91125C-CRhone"
768 select SIBYTE_BCM1125
770 select SYS_HAS_CPU_SB1
771 select SYS_SUPPORTS_BIG_ENDIAN
772 select SYS_SUPPORTS_HIGHMEM
773 select SYS_SUPPORTS_LITTLE_ENDIAN
776 bool "Sibyte BCM91125E-Rhone"
779 select SIBYTE_BCM1125H
781 select SYS_HAS_CPU_SB1
782 select SYS_SUPPORTS_BIG_ENDIAN
783 select SYS_SUPPORTS_LITTLE_ENDIAN
786 bool "Sibyte BCM91250A-SWARM"
789 select HAVE_PATA_PLATFORM
792 select SYS_HAS_CPU_SB1
793 select SYS_SUPPORTS_BIG_ENDIAN
794 select SYS_SUPPORTS_HIGHMEM
795 select SYS_SUPPORTS_LITTLE_ENDIAN
796 select ZONE_DMA32 if 64BIT
798 config SIBYTE_LITTLESUR
799 bool "Sibyte BCM91250C2-LittleSur"
802 select HAVE_PATA_PLATFORM
805 select SYS_HAS_CPU_SB1
806 select SYS_SUPPORTS_BIG_ENDIAN
807 select SYS_SUPPORTS_HIGHMEM
808 select SYS_SUPPORTS_LITTLE_ENDIAN
810 config SIBYTE_SENTOSA
811 bool "Sibyte BCM91250E-Sentosa"
816 select SYS_HAS_CPU_SB1
817 select SYS_SUPPORTS_BIG_ENDIAN
818 select SYS_SUPPORTS_LITTLE_ENDIAN
821 bool "Sibyte BCM91480B-BigSur"
824 select NR_CPUS_DEFAULT_4
825 select SIBYTE_BCM1x80
827 select SYS_HAS_CPU_SB1
828 select SYS_SUPPORTS_BIG_ENDIAN
829 select SYS_SUPPORTS_HIGHMEM
830 select SYS_SUPPORTS_LITTLE_ENDIAN
831 select ZONE_DMA32 if 64BIT
834 bool "SNI RM200/300/400"
835 select FW_ARC if CPU_LITTLE_ENDIAN
836 select FW_ARC32 if CPU_LITTLE_ENDIAN
837 select FW_SNIPROM if CPU_BIG_ENDIAN
838 select ARCH_MAY_HAVE_PC_FDC
842 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
843 select DMA_NONCOHERENT
844 select GENERIC_ISA_DMA
845 select HAVE_PCSPKR_PLATFORM
852 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
853 select SYS_HAS_CPU_R4X00
854 select SYS_HAS_CPU_R5000
855 select SYS_HAS_CPU_R10000
856 select R5000_CPU_SCACHE
857 select SYS_HAS_EARLY_PRINTK
858 select SYS_SUPPORTS_32BIT_KERNEL
859 select SYS_SUPPORTS_64BIT_KERNEL
860 select SYS_SUPPORTS_BIG_ENDIAN
861 select SYS_SUPPORTS_HIGHMEM
862 select SYS_SUPPORTS_LITTLE_ENDIAN
864 The SNI RM200/300/400 are MIPS-based machines manufactured by
865 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
866 Technology and now in turn merged with Fujitsu. Say Y here to
867 support this machine type.
870 bool "Toshiba TX39 series based machines"
873 bool "Toshiba TX49 series based machines"
875 config MIKROTIK_RB532
876 bool "Mikrotik RB532 boards"
879 select DMA_NONCOHERENT
882 select SYS_HAS_CPU_MIPS32_R1
883 select SYS_SUPPORTS_32BIT_KERNEL
884 select SYS_SUPPORTS_LITTLE_ENDIAN
888 select MIPS_L1_CACHE_SHIFT_4
890 Support the Mikrotik(tm) RouterBoard 532 series,
891 based on the IDT RC32434 SoC.
893 config CAVIUM_OCTEON_SOC
894 bool "Cavium Networks Octeon SoC based boards"
896 select ARCH_PHYS_ADDR_T_64BIT
898 select SYS_SUPPORTS_64BIT_KERNEL
899 select SYS_SUPPORTS_BIG_ENDIAN
901 select EDAC_ATOMIC_SCRUB
902 select SYS_SUPPORTS_LITTLE_ENDIAN
903 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
904 select SYS_HAS_EARLY_PRINTK
905 select SYS_HAS_CPU_CAVIUM_OCTEON
912 select ARCH_SPARSEMEM_ENABLE
913 select SYS_SUPPORTS_SMP
914 select NR_CPUS_DEFAULT_16
916 select MTD_COMPLEX_MAPPINGS
917 select SYS_SUPPORTS_RELOCATABLE
919 This option supports all of the Octeon reference boards from Cavium
920 Networks. It builds a kernel that dynamically determines the Octeon
921 CPU type and supports all known board reference implementations.
922 Some of the supported boards are:
929 Say Y here for most Octeon reference boards.
932 bool "Netlogic XLR/XLS based systems"
935 select SYS_HAS_CPU_XLR
936 select SYS_SUPPORTS_SMP
939 select SYS_SUPPORTS_32BIT_KERNEL
940 select SYS_SUPPORTS_64BIT_KERNEL
941 select ARCH_PHYS_ADDR_T_64BIT
942 select SYS_SUPPORTS_BIG_ENDIAN
943 select SYS_SUPPORTS_HIGHMEM
945 select NR_CPUS_DEFAULT_32
949 select ZONE_DMA32 if 64BIT
951 select SYS_HAS_EARLY_PRINTK
952 select SYS_SUPPORTS_ZBOOT
953 select SYS_SUPPORTS_ZBOOT_UART16550
955 Support for systems based on Netlogic XLR and XLS processors.
956 Say Y here if you have a XLR or XLS based board.
959 bool "Netlogic XLP based systems"
962 select SYS_HAS_CPU_XLP
963 select SYS_SUPPORTS_SMP
965 select SYS_SUPPORTS_32BIT_KERNEL
966 select SYS_SUPPORTS_64BIT_KERNEL
967 select ARCH_PHYS_ADDR_T_64BIT
969 select SYS_SUPPORTS_BIG_ENDIAN
970 select SYS_SUPPORTS_LITTLE_ENDIAN
971 select SYS_SUPPORTS_HIGHMEM
973 select NR_CPUS_DEFAULT_32
977 select ZONE_DMA32 if 64BIT
979 select SYS_HAS_EARLY_PRINTK
981 select SYS_SUPPORTS_ZBOOT
982 select SYS_SUPPORTS_ZBOOT_UART16550
984 This board is based on Netlogic XLP Processor.
985 Say Y here if you have a XLP based board.
988 bool "Para-Virtualized guest system"
992 select SYS_SUPPORTS_64BIT_KERNEL
993 select SYS_SUPPORTS_32BIT_KERNEL
994 select SYS_SUPPORTS_BIG_ENDIAN
995 select SYS_SUPPORTS_SMP
996 select NR_CPUS_DEFAULT_4
997 select SYS_HAS_EARLY_PRINTK
998 select SYS_HAS_CPU_MIPS32_R2
999 select SYS_HAS_CPU_MIPS64_R2
1000 select SYS_HAS_CPU_CAVIUM_OCTEON
1002 select SWAP_IO_SPACE
1004 This option supports guest running under ????
1008 source "arch/mips/alchemy/Kconfig"
1009 source "arch/mips/ath25/Kconfig"
1010 source "arch/mips/ath79/Kconfig"
1011 source "arch/mips/bcm47xx/Kconfig"
1012 source "arch/mips/bcm63xx/Kconfig"
1013 source "arch/mips/bmips/Kconfig"
1014 source "arch/mips/generic/Kconfig"
1015 source "arch/mips/jazz/Kconfig"
1016 source "arch/mips/jz4740/Kconfig"
1017 source "arch/mips/lantiq/Kconfig"
1018 source "arch/mips/lasat/Kconfig"
1019 source "arch/mips/pic32/Kconfig"
1020 source "arch/mips/pistachio/Kconfig"
1021 source "arch/mips/pmcs-msp71xx/Kconfig"
1022 source "arch/mips/ralink/Kconfig"
1023 source "arch/mips/sgi-ip27/Kconfig"
1024 source "arch/mips/sibyte/Kconfig"
1025 source "arch/mips/txx9/Kconfig"
1026 source "arch/mips/vr41xx/Kconfig"
1027 source "arch/mips/cavium-octeon/Kconfig"
1028 source "arch/mips/loongson32/Kconfig"
1029 source "arch/mips/loongson64/Kconfig"
1030 source "arch/mips/netlogic/Kconfig"
1031 source "arch/mips/paravirt/Kconfig"
1032 source "arch/mips/xilfpga/Kconfig"
1036 config RWSEM_GENERIC_SPINLOCK
1040 config RWSEM_XCHGADD_ALGORITHM
1043 config ARCH_HAS_ILOG2_U32
1047 config ARCH_HAS_ILOG2_U64
1051 config GENERIC_HWEIGHT
1055 config GENERIC_CALIBRATE_DELAY
1059 config SCHED_OMIT_FRAME_POINTER
1064 # Select some configuration options automatically based on user selections.
1069 config ARCH_MAY_HAVE_PC_FDC
1105 config MIPS_CLOCK_VSYSCALL
1106 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1115 config ARCH_DMA_ADDR_T_64BIT
1116 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1118 config ARCH_SUPPORTS_UPROBES
1121 config DMA_MAYBE_COHERENT
1122 select DMA_NONCOHERENT
1125 config DMA_PERDEV_COHERENT
1127 select DMA_MAYBE_COHERENT
1132 config DMA_NONCOHERENT
1134 select NEED_DMA_MAP_STATE
1136 config NEED_DMA_MAP_STATE
1139 config SYS_HAS_EARLY_PRINTK
1142 config SYS_SUPPORTS_HOTPLUG_CPU
1145 config MIPS_BONITO64
1160 config NO_IOPORT_MAP
1166 config GENERIC_ISA_DMA
1168 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1171 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1173 select GENERIC_ISA_DMA
1178 config HOLES_IN_ZONE
1181 config SYS_SUPPORTS_RELOCATABLE
1184 Selected if the platform supports relocating the kernel.
1185 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1186 to allow access to command line and entropy sources.
1189 # Endianness selection. Sufficiently obscure so many users don't know what to
1190 # answer,so we try hard to limit the available choices. Also the use of a
1191 # choice statement should be more obvious to the user.
1194 prompt "Endianness selection"
1196 Some MIPS machines can be configured for either little or big endian
1197 byte order. These modes require different kernels and a different
1198 Linux distribution. In general there is one preferred byteorder for a
1199 particular system but some systems are just as commonly used in the
1200 one or the other endianness.
1202 config CPU_BIG_ENDIAN
1204 depends on SYS_SUPPORTS_BIG_ENDIAN
1206 config CPU_LITTLE_ENDIAN
1207 bool "Little endian"
1208 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1215 config SYS_SUPPORTS_APM_EMULATION
1218 config SYS_SUPPORTS_BIG_ENDIAN
1221 config SYS_SUPPORTS_LITTLE_ENDIAN
1224 config SYS_SUPPORTS_HUGETLBFS
1226 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1229 config MIPS_HUGE_TLB_SUPPORT
1230 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1247 config PCI_GT64XXX_PCI0
1250 config NO_EXCEPT_FILL
1257 select DMA_NONCOHERENT
1259 select SWAP_IO_SPACE
1260 select SYS_HAS_CPU_R5500
1261 select SYS_SUPPORTS_32BIT_KERNEL
1262 select SYS_SUPPORTS_64BIT_KERNEL
1263 select SYS_SUPPORTS_BIG_ENDIAN
1270 select DMA_NONCOHERENT
1271 select SYS_HAS_CPU_MIPS32_R2
1272 select SYS_SUPPORTS_32BIT_KERNEL
1273 select SYS_SUPPORTS_LITTLE_ENDIAN
1274 select SYS_SUPPORTS_BIG_ENDIAN
1275 select SYS_SUPPORTS_MIPS16
1276 select CPU_MIPSR2_IRQ_VI
1285 config SWAP_IO_SPACE
1288 config SGI_HAS_INDYDOG
1300 config SGI_HAS_ZILOG
1303 config SGI_HAS_I8042
1306 config DEFAULT_SGI_PARTITION
1318 config MIPS_L1_CACHE_SHIFT_4
1321 config MIPS_L1_CACHE_SHIFT_5
1324 config MIPS_L1_CACHE_SHIFT_6
1327 config MIPS_L1_CACHE_SHIFT_7
1330 config MIPS_L1_CACHE_SHIFT
1332 default "7" if MIPS_L1_CACHE_SHIFT_7
1333 default "6" if MIPS_L1_CACHE_SHIFT_6
1334 default "5" if MIPS_L1_CACHE_SHIFT_5
1335 default "4" if MIPS_L1_CACHE_SHIFT_4
1338 config HAVE_STD_PC_SERIAL_PORT
1342 bool "ARC console support"
1343 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1347 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1352 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1361 menu "CPU selection"
1367 config CPU_LOONGSON3
1368 bool "Loongson 3 CPU"
1369 depends on SYS_HAS_CPU_LOONGSON3
1370 select CPU_SUPPORTS_64BIT_KERNEL
1371 select CPU_SUPPORTS_HIGHMEM
1372 select CPU_SUPPORTS_HUGEPAGES
1373 select WEAK_ORDERING
1374 select WEAK_REORDERING_BEYOND_LLSC
1375 select MIPS_PGD_C0_CONTEXT
1378 The Loongson 3 processor implements the MIPS64R2 instruction
1379 set with many extensions.
1381 config LOONGSON3_ENHANCEMENT
1382 bool "New Loongson 3 CPU Enhancements"
1385 select CPU_HAS_PREFETCH
1386 depends on CPU_LOONGSON3
1388 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1389 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1390 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1391 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1392 Fast TLB refill support, etc.
1394 This option enable those enhancements which are not probed at run
1395 time. If you want a generic kernel to run on all Loongson 3 machines,
1396 please say 'N' here. If you want a high-performance kernel to run on
1397 new Loongson 3 machines only, please say 'Y' here.
1399 config CPU_LOONGSON2E
1401 depends on SYS_HAS_CPU_LOONGSON2E
1402 select CPU_LOONGSON2
1404 The Loongson 2E processor implements the MIPS III instruction set
1405 with many extensions.
1407 It has an internal FPGA northbridge, which is compatible to
1410 config CPU_LOONGSON2F
1412 depends on SYS_HAS_CPU_LOONGSON2F
1413 select CPU_LOONGSON2
1416 The Loongson 2F processor implements the MIPS III instruction set
1417 with many extensions.
1419 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1420 have a similar programming interface with FPGA northbridge used in
1423 config CPU_LOONGSON1B
1425 depends on SYS_HAS_CPU_LOONGSON1B
1426 select CPU_LOONGSON1
1427 select LEDS_GPIO_REGISTER
1429 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1430 release 2 instruction set.
1432 config CPU_LOONGSON1C
1434 depends on SYS_HAS_CPU_LOONGSON1C
1435 select CPU_LOONGSON1
1436 select LEDS_GPIO_REGISTER
1438 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1439 release 2 instruction set.
1441 config CPU_MIPS32_R1
1442 bool "MIPS32 Release 1"
1443 depends on SYS_HAS_CPU_MIPS32_R1
1444 select CPU_HAS_PREFETCH
1445 select CPU_SUPPORTS_32BIT_KERNEL
1446 select CPU_SUPPORTS_HIGHMEM
1448 Choose this option to build a kernel for release 1 or later of the
1449 MIPS32 architecture. Most modern embedded systems with a 32-bit
1450 MIPS processor are based on a MIPS32 processor. If you know the
1451 specific type of processor in your system, choose those that one
1452 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1453 Release 2 of the MIPS32 architecture is available since several
1454 years so chances are you even have a MIPS32 Release 2 processor
1455 in which case you should choose CPU_MIPS32_R2 instead for better
1458 config CPU_MIPS32_R2
1459 bool "MIPS32 Release 2"
1460 depends on SYS_HAS_CPU_MIPS32_R2
1461 select CPU_HAS_PREFETCH
1462 select CPU_SUPPORTS_32BIT_KERNEL
1463 select CPU_SUPPORTS_HIGHMEM
1464 select CPU_SUPPORTS_MSA
1467 Choose this option to build a kernel for release 2 or later of the
1468 MIPS32 architecture. Most modern embedded systems with a 32-bit
1469 MIPS processor are based on a MIPS32 processor. If you know the
1470 specific type of processor in your system, choose those that one
1471 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1473 config CPU_MIPS32_R6
1474 bool "MIPS32 Release 6"
1475 depends on SYS_HAS_CPU_MIPS32_R6
1476 select CPU_HAS_PREFETCH
1477 select CPU_SUPPORTS_32BIT_KERNEL
1478 select CPU_SUPPORTS_HIGHMEM
1479 select CPU_SUPPORTS_MSA
1482 select MIPS_O32_FP64_SUPPORT
1484 Choose this option to build a kernel for release 6 or later of the
1485 MIPS32 architecture. New MIPS processors, starting with the Warrior
1486 family, are based on a MIPS32r6 processor. If you own an older
1487 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1489 config CPU_MIPS64_R1
1490 bool "MIPS64 Release 1"
1491 depends on SYS_HAS_CPU_MIPS64_R1
1492 select CPU_HAS_PREFETCH
1493 select CPU_SUPPORTS_32BIT_KERNEL
1494 select CPU_SUPPORTS_64BIT_KERNEL
1495 select CPU_SUPPORTS_HIGHMEM
1496 select CPU_SUPPORTS_HUGEPAGES
1498 Choose this option to build a kernel for release 1 or later of the
1499 MIPS64 architecture. Many modern embedded systems with a 64-bit
1500 MIPS processor are based on a MIPS64 processor. If you know the
1501 specific type of processor in your system, choose those that one
1502 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1503 Release 2 of the MIPS64 architecture is available since several
1504 years so chances are you even have a MIPS64 Release 2 processor
1505 in which case you should choose CPU_MIPS64_R2 instead for better
1508 config CPU_MIPS64_R2
1509 bool "MIPS64 Release 2"
1510 depends on SYS_HAS_CPU_MIPS64_R2
1511 select CPU_HAS_PREFETCH
1512 select CPU_SUPPORTS_32BIT_KERNEL
1513 select CPU_SUPPORTS_64BIT_KERNEL
1514 select CPU_SUPPORTS_HIGHMEM
1515 select CPU_SUPPORTS_HUGEPAGES
1516 select CPU_SUPPORTS_MSA
1519 Choose this option to build a kernel for release 2 or later of the
1520 MIPS64 architecture. Many modern embedded systems with a 64-bit
1521 MIPS processor are based on a MIPS64 processor. If you know the
1522 specific type of processor in your system, choose those that one
1523 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1525 config CPU_MIPS64_R6
1526 bool "MIPS64 Release 6"
1527 depends on SYS_HAS_CPU_MIPS64_R6
1528 select CPU_HAS_PREFETCH
1529 select CPU_SUPPORTS_32BIT_KERNEL
1530 select CPU_SUPPORTS_64BIT_KERNEL
1531 select CPU_SUPPORTS_HIGHMEM
1532 select CPU_SUPPORTS_MSA
1534 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1537 Choose this option to build a kernel for release 6 or later of the
1538 MIPS64 architecture. New MIPS processors, starting with the Warrior
1539 family, are based on a MIPS64r6 processor. If you own an older
1540 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1544 depends on SYS_HAS_CPU_R3000
1546 select CPU_SUPPORTS_32BIT_KERNEL
1547 select CPU_SUPPORTS_HIGHMEM
1549 Please make sure to pick the right CPU type. Linux/MIPS is not
1550 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1551 *not* work on R4000 machines and vice versa. However, since most
1552 of the supported machines have an R4000 (or similar) CPU, R4x00
1553 might be a safe bet. If the resulting kernel does not work,
1554 try to recompile with R3000.
1558 depends on SYS_HAS_CPU_TX39XX
1559 select CPU_SUPPORTS_32BIT_KERNEL
1563 depends on SYS_HAS_CPU_VR41XX
1564 select CPU_SUPPORTS_32BIT_KERNEL
1565 select CPU_SUPPORTS_64BIT_KERNEL
1567 The options selects support for the NEC VR4100 series of processors.
1568 Only choose this option if you have one of these processors as a
1569 kernel built with this option will not run on any other type of
1570 processor or vice versa.
1574 depends on SYS_HAS_CPU_R4300
1575 select CPU_SUPPORTS_32BIT_KERNEL
1576 select CPU_SUPPORTS_64BIT_KERNEL
1578 MIPS Technologies R4300-series processors.
1582 depends on SYS_HAS_CPU_R4X00
1583 select CPU_SUPPORTS_32BIT_KERNEL
1584 select CPU_SUPPORTS_64BIT_KERNEL
1585 select CPU_SUPPORTS_HUGEPAGES
1587 MIPS Technologies R4000-series processors other than 4300, including
1588 the R4000, R4400, R4600, and 4700.
1592 depends on SYS_HAS_CPU_TX49XX
1593 select CPU_HAS_PREFETCH
1594 select CPU_SUPPORTS_32BIT_KERNEL
1595 select CPU_SUPPORTS_64BIT_KERNEL
1596 select CPU_SUPPORTS_HUGEPAGES
1600 depends on SYS_HAS_CPU_R5000
1601 select CPU_SUPPORTS_32BIT_KERNEL
1602 select CPU_SUPPORTS_64BIT_KERNEL
1603 select CPU_SUPPORTS_HUGEPAGES
1605 MIPS Technologies R5000-series processors other than the Nevada.
1609 depends on SYS_HAS_CPU_R5432
1610 select CPU_SUPPORTS_32BIT_KERNEL
1611 select CPU_SUPPORTS_64BIT_KERNEL
1612 select CPU_SUPPORTS_HUGEPAGES
1616 depends on SYS_HAS_CPU_R5500
1617 select CPU_SUPPORTS_32BIT_KERNEL
1618 select CPU_SUPPORTS_64BIT_KERNEL
1619 select CPU_SUPPORTS_HUGEPAGES
1621 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1626 depends on SYS_HAS_CPU_R6000
1627 select CPU_SUPPORTS_32BIT_KERNEL
1629 MIPS Technologies R6000 and R6000A series processors. Note these
1630 processors are extremely rare and the support for them is incomplete.
1634 depends on SYS_HAS_CPU_NEVADA
1635 select CPU_SUPPORTS_32BIT_KERNEL
1636 select CPU_SUPPORTS_64BIT_KERNEL
1637 select CPU_SUPPORTS_HUGEPAGES
1639 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1643 depends on SYS_HAS_CPU_R8000
1644 select CPU_HAS_PREFETCH
1645 select CPU_SUPPORTS_64BIT_KERNEL
1647 MIPS Technologies R8000 processors. Note these processors are
1648 uncommon and the support for them is incomplete.
1652 depends on SYS_HAS_CPU_R10000
1653 select CPU_HAS_PREFETCH
1654 select CPU_SUPPORTS_32BIT_KERNEL
1655 select CPU_SUPPORTS_64BIT_KERNEL
1656 select CPU_SUPPORTS_HIGHMEM
1657 select CPU_SUPPORTS_HUGEPAGES
1659 MIPS Technologies R10000-series processors.
1663 depends on SYS_HAS_CPU_RM7000
1664 select CPU_HAS_PREFETCH
1665 select CPU_SUPPORTS_32BIT_KERNEL
1666 select CPU_SUPPORTS_64BIT_KERNEL
1667 select CPU_SUPPORTS_HIGHMEM
1668 select CPU_SUPPORTS_HUGEPAGES
1672 depends on SYS_HAS_CPU_SB1
1673 select CPU_SUPPORTS_32BIT_KERNEL
1674 select CPU_SUPPORTS_64BIT_KERNEL
1675 select CPU_SUPPORTS_HIGHMEM
1676 select CPU_SUPPORTS_HUGEPAGES
1677 select WEAK_ORDERING
1679 config CPU_CAVIUM_OCTEON
1680 bool "Cavium Octeon processor"
1681 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1682 select CPU_HAS_PREFETCH
1683 select CPU_SUPPORTS_64BIT_KERNEL
1684 select WEAK_ORDERING
1685 select CPU_SUPPORTS_HIGHMEM
1686 select CPU_SUPPORTS_HUGEPAGES
1687 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1688 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1689 select MIPS_L1_CACHE_SHIFT_7
1692 The Cavium Octeon processor is a highly integrated chip containing
1693 many ethernet hardware widgets for networking tasks. The processor
1694 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1695 Full details can be found at http://www.caviumnetworks.com.
1698 bool "Broadcom BMIPS"
1699 depends on SYS_HAS_CPU_BMIPS
1701 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1702 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1703 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1704 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1705 select CPU_SUPPORTS_32BIT_KERNEL
1706 select DMA_NONCOHERENT
1708 select SWAP_IO_SPACE
1709 select WEAK_ORDERING
1710 select CPU_SUPPORTS_HIGHMEM
1711 select CPU_HAS_PREFETCH
1712 select CPU_SUPPORTS_CPUFREQ
1713 select MIPS_EXTERNAL_TIMER
1715 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1718 bool "Netlogic XLR SoC"
1719 depends on SYS_HAS_CPU_XLR
1720 select CPU_SUPPORTS_32BIT_KERNEL
1721 select CPU_SUPPORTS_64BIT_KERNEL
1722 select CPU_SUPPORTS_HIGHMEM
1723 select CPU_SUPPORTS_HUGEPAGES
1724 select WEAK_ORDERING
1725 select WEAK_REORDERING_BEYOND_LLSC
1727 Netlogic Microsystems XLR/XLS processors.
1730 bool "Netlogic XLP SoC"
1731 depends on SYS_HAS_CPU_XLP
1732 select CPU_SUPPORTS_32BIT_KERNEL
1733 select CPU_SUPPORTS_64BIT_KERNEL
1734 select CPU_SUPPORTS_HIGHMEM
1735 select WEAK_ORDERING
1736 select WEAK_REORDERING_BEYOND_LLSC
1737 select CPU_HAS_PREFETCH
1739 select CPU_SUPPORTS_HUGEPAGES
1740 select MIPS_ASID_BITS_VARIABLE
1742 Netlogic Microsystems XLP processors.
1745 config CPU_MIPS32_3_5_FEATURES
1746 bool "MIPS32 Release 3.5 Features"
1747 depends on SYS_HAS_CPU_MIPS32_R3_5
1748 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1750 Choose this option to build a kernel for release 2 or later of the
1751 MIPS32 architecture including features from the 3.5 release such as
1752 support for Enhanced Virtual Addressing (EVA).
1754 config CPU_MIPS32_3_5_EVA
1755 bool "Enhanced Virtual Addressing (EVA)"
1756 depends on CPU_MIPS32_3_5_FEATURES
1760 Choose this option if you want to enable the Enhanced Virtual
1761 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1762 One of its primary benefits is an increase in the maximum size
1763 of lowmem (up to 3GB). If unsure, say 'N' here.
1765 config CPU_MIPS32_R5_FEATURES
1766 bool "MIPS32 Release 5 Features"
1767 depends on SYS_HAS_CPU_MIPS32_R5
1768 depends on CPU_MIPS32_R2
1770 Choose this option to build a kernel for release 2 or later of the
1771 MIPS32 architecture including features from release 5 such as
1772 support for Extended Physical Addressing (XPA).
1774 config CPU_MIPS32_R5_XPA
1775 bool "Extended Physical Addressing (XPA)"
1776 depends on CPU_MIPS32_R5_FEATURES
1778 depends on !PAGE_SIZE_4KB
1779 depends on SYS_SUPPORTS_HIGHMEM
1782 select ARCH_PHYS_ADDR_T_64BIT
1785 Choose this option if you want to enable the Extended Physical
1786 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1787 benefit is to increase physical addressing equal to or greater
1788 than 40 bits. Note that this has the side effect of turning on
1789 64-bit addressing which in turn makes the PTEs 64-bit in size.
1790 If unsure, say 'N' here.
1793 config CPU_NOP_WORKAROUNDS
1796 config CPU_JUMP_WORKAROUNDS
1799 config CPU_LOONGSON2F_WORKAROUNDS
1800 bool "Loongson 2F Workarounds"
1802 select CPU_NOP_WORKAROUNDS
1803 select CPU_JUMP_WORKAROUNDS
1805 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1806 require workarounds. Without workarounds the system may hang
1807 unexpectedly. For more information please refer to the gas
1808 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1810 Loongson 2F03 and later have fixed these issues and no workarounds
1811 are needed. The workarounds have no significant side effect on them
1812 but may decrease the performance of the system so this option should
1813 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1816 If unsure, please say Y.
1817 endif # CPU_LOONGSON2F
1819 config SYS_SUPPORTS_ZBOOT
1821 select HAVE_KERNEL_GZIP
1822 select HAVE_KERNEL_BZIP2
1823 select HAVE_KERNEL_LZ4
1824 select HAVE_KERNEL_LZMA
1825 select HAVE_KERNEL_LZO
1826 select HAVE_KERNEL_XZ
1828 config SYS_SUPPORTS_ZBOOT_UART16550
1830 select SYS_SUPPORTS_ZBOOT
1832 config SYS_SUPPORTS_ZBOOT_UART_PROM
1834 select SYS_SUPPORTS_ZBOOT
1836 config CPU_LOONGSON2
1838 select CPU_SUPPORTS_32BIT_KERNEL
1839 select CPU_SUPPORTS_64BIT_KERNEL
1840 select CPU_SUPPORTS_HIGHMEM
1841 select CPU_SUPPORTS_HUGEPAGES
1843 config CPU_LOONGSON1
1847 select CPU_HAS_PREFETCH
1848 select CPU_SUPPORTS_32BIT_KERNEL
1849 select CPU_SUPPORTS_HIGHMEM
1850 select CPU_SUPPORTS_CPUFREQ
1852 config CPU_BMIPS32_3300
1853 select SMP_UP if SMP
1856 config CPU_BMIPS4350
1858 select SYS_SUPPORTS_SMP
1859 select SYS_SUPPORTS_HOTPLUG_CPU
1861 config CPU_BMIPS4380
1863 select MIPS_L1_CACHE_SHIFT_6
1864 select SYS_SUPPORTS_SMP
1865 select SYS_SUPPORTS_HOTPLUG_CPU
1868 config CPU_BMIPS5000
1870 select MIPS_CPU_SCACHE
1871 select MIPS_L1_CACHE_SHIFT_7
1872 select SYS_SUPPORTS_SMP
1873 select SYS_SUPPORTS_HOTPLUG_CPU
1876 config SYS_HAS_CPU_LOONGSON3
1878 select CPU_SUPPORTS_CPUFREQ
1881 config SYS_HAS_CPU_LOONGSON2E
1884 config SYS_HAS_CPU_LOONGSON2F
1886 select CPU_SUPPORTS_CPUFREQ
1887 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1888 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1890 config SYS_HAS_CPU_LOONGSON1B
1893 config SYS_HAS_CPU_LOONGSON1C
1896 config SYS_HAS_CPU_MIPS32_R1
1899 config SYS_HAS_CPU_MIPS32_R2
1902 config SYS_HAS_CPU_MIPS32_R3_5
1905 config SYS_HAS_CPU_MIPS32_R5
1908 config SYS_HAS_CPU_MIPS32_R6
1911 config SYS_HAS_CPU_MIPS64_R1
1914 config SYS_HAS_CPU_MIPS64_R2
1917 config SYS_HAS_CPU_MIPS64_R6
1920 config SYS_HAS_CPU_R3000
1923 config SYS_HAS_CPU_TX39XX
1926 config SYS_HAS_CPU_VR41XX
1929 config SYS_HAS_CPU_R4300
1932 config SYS_HAS_CPU_R4X00
1935 config SYS_HAS_CPU_TX49XX
1938 config SYS_HAS_CPU_R5000
1941 config SYS_HAS_CPU_R5432
1944 config SYS_HAS_CPU_R5500
1947 config SYS_HAS_CPU_R6000
1950 config SYS_HAS_CPU_NEVADA
1953 config SYS_HAS_CPU_R8000
1956 config SYS_HAS_CPU_R10000
1959 config SYS_HAS_CPU_RM7000
1962 config SYS_HAS_CPU_SB1
1965 config SYS_HAS_CPU_CAVIUM_OCTEON
1968 config SYS_HAS_CPU_BMIPS
1971 config SYS_HAS_CPU_BMIPS32_3300
1973 select SYS_HAS_CPU_BMIPS
1975 config SYS_HAS_CPU_BMIPS4350
1977 select SYS_HAS_CPU_BMIPS
1979 config SYS_HAS_CPU_BMIPS4380
1981 select SYS_HAS_CPU_BMIPS
1983 config SYS_HAS_CPU_BMIPS5000
1985 select SYS_HAS_CPU_BMIPS
1987 config SYS_HAS_CPU_XLR
1990 config SYS_HAS_CPU_XLP
1993 config MIPS_MALTA_PM
1994 depends on MIPS_MALTA
2000 # CPU may reorder R->R, R->W, W->R, W->W
2001 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2003 config WEAK_ORDERING
2007 # CPU may reorder reads and writes beyond LL/SC
2008 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2010 config WEAK_REORDERING_BEYOND_LLSC
2015 # These two indicate any level of the MIPS32 and MIPS64 architecture
2019 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2023 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2026 # These two indicate the revision of the architecture, either Release 1 or Release 2
2030 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2034 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2040 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2042 select HAVE_ARCH_BITREVERSE
2043 select MIPS_ASID_BITS_VARIABLE
2052 config SYS_SUPPORTS_32BIT_KERNEL
2054 config SYS_SUPPORTS_64BIT_KERNEL
2056 config CPU_SUPPORTS_32BIT_KERNEL
2058 config CPU_SUPPORTS_64BIT_KERNEL
2060 config CPU_SUPPORTS_CPUFREQ
2062 config CPU_SUPPORTS_ADDRWINCFG
2064 config CPU_SUPPORTS_HUGEPAGES
2066 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2068 config MIPS_PGD_C0_CONTEXT
2070 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2073 # Set to y for ptrace access to watch registers.
2075 config HARDWARE_WATCHPOINTS
2077 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2082 prompt "Kernel code model"
2084 You should only select this option if you have a workload that
2085 actually benefits from 64-bit processing or if your machine has
2086 large memory. You will only be presented a single option in this
2087 menu if your system does not support both 32-bit and 64-bit kernels.
2090 bool "32-bit kernel"
2091 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2094 Select this option if you want to build a 32-bit kernel.
2097 bool "64-bit kernel"
2098 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2100 Select this option if you want to build a 64-bit kernel.
2105 bool "KVM Guest Kernel"
2106 depends on BROKEN_ON_SMP
2108 Select this option if building a guest kernel for KVM (Trap & Emulate)
2111 config KVM_GUEST_TIMER_FREQ
2112 int "Count/Compare Timer Frequency (MHz)"
2113 depends on KVM_GUEST
2116 Set this to non-zero if building a guest kernel for KVM to skip RTC
2117 emulation when determining guest CPU Frequency. Instead, the guest's
2118 timer frequency is specified directly.
2120 config MIPS_VA_BITS_48
2121 bool "48 bits virtual memory"
2124 Support a maximum at least 48 bits of application virtual memory.
2125 Default is 40 bits or less, depending on the CPU.
2126 This option result in a small memory overhead for page tables.
2127 This option is only supported with 16k and 64k page sizes.
2131 prompt "Kernel page size"
2132 default PAGE_SIZE_4KB
2134 config PAGE_SIZE_4KB
2136 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2137 depends on !MIPS_VA_BITS_48
2139 This option select the standard 4kB Linux page size. On some
2140 R3000-family processors this is the only available page size. Using
2141 4kB page size will minimize memory consumption and is therefore
2142 recommended for low memory systems.
2144 config PAGE_SIZE_8KB
2146 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2147 depends on !MIPS_VA_BITS_48
2149 Using 8kB page size will result in higher performance kernel at
2150 the price of higher memory consumption. This option is available
2151 only on R8000 and cnMIPS processors. Note that you will need a
2152 suitable Linux distribution to support this.
2154 config PAGE_SIZE_16KB
2156 depends on !CPU_R3000 && !CPU_TX39XX
2158 Using 16kB page size will result in higher performance kernel at
2159 the price of higher memory consumption. This option is available on
2160 all non-R3000 family processors. Note that you will need a suitable
2161 Linux distribution to support this.
2163 config PAGE_SIZE_32KB
2165 depends on CPU_CAVIUM_OCTEON
2166 depends on !MIPS_VA_BITS_48
2168 Using 32kB page size will result in higher performance kernel at
2169 the price of higher memory consumption. This option is available
2170 only on cnMIPS cores. Note that you will need a suitable Linux
2171 distribution to support this.
2173 config PAGE_SIZE_64KB
2175 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2177 Using 64kB page size will result in higher performance kernel at
2178 the price of higher memory consumption. This option is available on
2179 all non-R3000 family processor. Not that at the time of this
2180 writing this option is still high experimental.
2184 config FORCE_MAX_ZONEORDER
2185 int "Maximum zone order"
2186 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2187 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2188 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2189 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2190 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2191 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2195 The kernel memory allocator divides physically contiguous memory
2196 blocks into "zones", where each zone is a power of two number of
2197 pages. This option selects the largest power of two that the kernel
2198 keeps in the memory allocator. If you need to allocate very large
2199 blocks of physically contiguous memory, then you may need to
2200 increase this value.
2202 This config option is actually maximum order plus one. For example,
2203 a value of 11 means that the largest free memory block is 2^10 pages.
2205 The page size is not necessarily 4KB. Keep this in mind
2206 when choosing a value for this option.
2211 config IP22_CPU_SCACHE
2216 # Support for a MIPS32 / MIPS64 style S-caches
2218 config MIPS_CPU_SCACHE
2222 config R5000_CPU_SCACHE
2226 config RM7000_CPU_SCACHE
2230 config SIBYTE_DMA_PAGEOPS
2231 bool "Use DMA to clear/copy pages"
2234 Instead of using the CPU to zero and copy pages, use a Data Mover
2235 channel. These DMA channels are otherwise unused by the standard
2236 SiByte Linux port. Seems to give a small performance benefit.
2238 config CPU_HAS_PREFETCH
2241 config CPU_GENERIC_DUMP_TLB
2243 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2247 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2249 config CPU_R4K_CACHE_TLB
2251 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2254 bool "MIPS MT SMP support (1 TC on each available VPE)"
2255 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2256 select CPU_MIPSR2_IRQ_VI
2257 select CPU_MIPSR2_IRQ_EI
2262 select SYS_SUPPORTS_SMP
2263 select SYS_SUPPORTS_SCHED_SMT
2264 select MIPS_PERF_SHARED_TC_COUNTERS
2266 This is a kernel model which is known as SMVP. This is supported
2267 on cores with the MT ASE and uses the available VPEs to implement
2268 virtual processors which supports SMP. This is equivalent to the
2269 Intel Hyperthreading feature. For further information go to
2270 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2276 bool "SMT (multithreading) scheduler support"
2277 depends on SYS_SUPPORTS_SCHED_SMT
2280 SMT scheduler support improves the CPU scheduler's decision making
2281 when dealing with MIPS MT enabled cores at a cost of slightly
2282 increased overhead in some places. If unsure say N here.
2284 config SYS_SUPPORTS_SCHED_SMT
2287 config SYS_SUPPORTS_MULTITHREADING
2290 config MIPS_MT_FPAFF
2291 bool "Dynamic FPU affinity for FP-intensive threads"
2293 depends on MIPS_MT_SMP
2295 config MIPSR2_TO_R6_EMULATOR
2296 bool "MIPS R2-to-R6 emulator"
2297 depends on CPU_MIPSR6
2300 Choose this option if you want to run non-R6 MIPS userland code.
2301 Even if you say 'Y' here, the emulator will still be disabled by
2302 default. You can enable it using the 'mipsr2emu' kernel option.
2303 The only reason this is a build-time option is to save ~14K from the
2306 config MIPS_VPE_LOADER
2307 bool "VPE loader support."
2308 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2309 select CPU_MIPSR2_IRQ_VI
2310 select CPU_MIPSR2_IRQ_EI
2313 Includes a loader for loading an elf relocatable object
2314 onto another VPE and running it.
2316 config MIPS_VPE_LOADER_CMP
2319 depends on MIPS_VPE_LOADER && MIPS_CMP
2321 config MIPS_VPE_LOADER_MT
2324 depends on MIPS_VPE_LOADER && !MIPS_CMP
2326 config MIPS_VPE_LOADER_TOM
2327 bool "Load VPE program into memory hidden from linux"
2328 depends on MIPS_VPE_LOADER
2331 The loader can use memory that is present but has been hidden from
2332 Linux using the kernel command line option "mem=xxMB". It's up to
2333 you to ensure the amount you put in the option and the space your
2334 program requires is less or equal to the amount physically present.
2336 config MIPS_VPE_APSP_API
2337 bool "Enable support for AP/SP API (RTLX)"
2338 depends on MIPS_VPE_LOADER
2341 config MIPS_VPE_APSP_API_CMP
2344 depends on MIPS_VPE_APSP_API && MIPS_CMP
2346 config MIPS_VPE_APSP_API_MT
2349 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2352 bool "MIPS CMP framework support (DEPRECATED)"
2353 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2356 select SYS_SUPPORTS_SMP
2357 select WEAK_ORDERING
2360 Select this if you are using a bootloader which implements the "CMP
2361 framework" protocol (ie. YAMON) and want your kernel to make use of
2362 its ability to start secondary CPUs.
2364 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2368 bool "MIPS Coherent Processing System support"
2369 depends on SYS_SUPPORTS_MIPS_CPS
2372 select MIPS_CPS_PM if HOTPLUG_CPU
2374 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2375 select SYS_SUPPORTS_HOTPLUG_CPU
2376 select SYS_SUPPORTS_SMP
2377 select WEAK_ORDERING
2379 Select this if you wish to run an SMP kernel across multiple cores
2380 within a MIPS Coherent Processing System. When this option is
2381 enabled the kernel will probe for other cores and boot them with
2382 no external assistance. It is safe to enable this when hardware
2383 support is unavailable.
2396 config SB1_PASS_2_WORKAROUNDS
2398 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2401 config SB1_PASS_2_1_WORKAROUNDS
2403 depends on CPU_SB1 && CPU_SB1_PASS_2
2407 config ARCH_PHYS_ADDR_T_64BIT
2411 prompt "SmartMIPS or microMIPS ASE support"
2413 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2416 Select this if you want neither microMIPS nor SmartMIPS support
2418 config CPU_HAS_SMARTMIPS
2419 depends on SYS_SUPPORTS_SMARTMIPS
2422 SmartMIPS is a extension of the MIPS32 architecture aimed at
2423 increased security at both hardware and software level for
2424 smartcards. Enabling this option will allow proper use of the
2425 SmartMIPS instructions by Linux applications. However a kernel with
2426 this option will not work on a MIPS core without SmartMIPS core. If
2427 you don't know you probably don't have SmartMIPS and should say N
2430 config CPU_MICROMIPS
2431 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2434 When this option is enabled the kernel will be built using the
2440 bool "Support for the MIPS SIMD Architecture"
2441 depends on CPU_SUPPORTS_MSA
2442 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2444 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2445 and a set of SIMD instructions to operate on them. When this option
2446 is enabled the kernel will support allocating & switching MSA
2447 vector register contexts. If you know that your kernel will only be
2448 running on CPUs which do not support MSA or that your userland will
2449 not be making use of it then you may wish to say N here to reduce
2450 the size & complexity of your kernel.
2464 # Vectored interrupt mode is an R2 feature
2466 config CPU_MIPSR2_IRQ_VI
2470 # Extended interrupt mode is an R2 feature
2472 config CPU_MIPSR2_IRQ_EI
2477 depends on !CPU_R3000
2483 config CPU_DADDI_WORKAROUNDS
2486 config CPU_R4000_WORKAROUNDS
2488 select CPU_R4400_WORKAROUNDS
2490 config CPU_R4400_WORKAROUNDS
2493 config MIPS_ASID_SHIFT
2495 default 6 if CPU_R3000 || CPU_TX39XX
2496 default 4 if CPU_R8000
2499 config MIPS_ASID_BITS
2501 default 0 if MIPS_ASID_BITS_VARIABLE
2502 default 6 if CPU_R3000 || CPU_TX39XX
2505 config MIPS_ASID_BITS_VARIABLE
2509 # - Highmem only makes sense for the 32-bit kernel.
2510 # - The current highmem code will only work properly on physically indexed
2511 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2512 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2513 # moment we protect the user and offer the highmem option only on machines
2514 # where it's known to be safe. This will not offer highmem on a few systems
2515 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2516 # indexed CPUs but we're playing safe.
2517 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2518 # know they might have memory configurations that could make use of highmem
2522 bool "High Memory Support"
2523 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2525 config CPU_SUPPORTS_HIGHMEM
2528 config SYS_SUPPORTS_HIGHMEM
2531 config SYS_SUPPORTS_SMARTMIPS
2534 config SYS_SUPPORTS_MICROMIPS
2537 config SYS_SUPPORTS_MIPS16
2540 This option must be set if a kernel might be executed on a MIPS16-
2541 enabled CPU even if MIPS16 is not actually being used. In other
2542 words, it makes the kernel MIPS16-tolerant.
2544 config CPU_SUPPORTS_MSA
2547 config ARCH_FLATMEM_ENABLE
2549 depends on !NUMA && !CPU_LOONGSON2
2551 config ARCH_DISCONTIGMEM_ENABLE
2553 default y if SGI_IP27
2555 Say Y to support efficient handling of discontiguous physical memory,
2556 for architectures which are either NUMA (Non-Uniform Memory Access)
2557 or have huge holes in the physical address space for other reasons.
2558 See <file:Documentation/vm/numa> for more.
2560 config ARCH_SPARSEMEM_ENABLE
2562 select SPARSEMEM_STATIC
2566 depends on SYS_SUPPORTS_NUMA
2568 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2569 Access). This option improves performance on systems with more
2570 than two nodes; on two node systems it is generally better to
2571 leave it disabled; on single node systems disable this option
2574 config SYS_SUPPORTS_NUMA
2578 bool "Relocatable kernel"
2579 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2581 This builds a kernel image that retains relocation information
2582 so it can be loaded someplace besides the default 1MB.
2583 The relocations make the kernel binary about 15% larger,
2584 but are discarded at runtime
2586 config RELOCATION_TABLE_SIZE
2587 hex "Relocation table size"
2588 depends on RELOCATABLE
2589 range 0x0 0x01000000
2590 default "0x00100000"
2592 A table of relocation data will be appended to the kernel binary
2593 and parsed at boot to fix up the relocated kernel.
2595 This option allows the amount of space reserved for the table to be
2596 adjusted, although the default of 1Mb should be ok in most cases.
2598 The build will fail and a valid size suggested if this is too small.
2600 If unsure, leave at the default value.
2602 config RANDOMIZE_BASE
2603 bool "Randomize the address of the kernel image"
2604 depends on RELOCATABLE
2606 Randomizes the physical and virtual address at which the
2607 kernel image is loaded, as a security feature that
2608 deters exploit attempts relying on knowledge of the location
2609 of kernel internals.
2611 Entropy is generated using any coprocessor 0 registers available.
2613 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2617 config RANDOMIZE_BASE_MAX_OFFSET
2618 hex "Maximum kASLR offset" if EXPERT
2619 depends on RANDOMIZE_BASE
2620 range 0x0 0x40000000 if EVA || 64BIT
2621 range 0x0 0x08000000
2622 default "0x01000000"
2624 When kASLR is active, this provides the maximum offset that will
2625 be applied to the kernel image. It should be set according to the
2626 amount of physical RAM available in the target system minus
2627 PHYSICAL_START and must be a power of 2.
2629 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2630 EVA or 64-bit. The default is 16Mb.
2635 depends on NEED_MULTIPLE_NODES
2637 config HW_PERF_EVENTS
2638 bool "Enable hardware performance counter support for perf events"
2639 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2642 Enable hardware performance counter support for perf events. If
2643 disabled, perf events will use software events only.
2648 bool "Multi-Processing support"
2649 depends on SYS_SUPPORTS_SMP
2651 This enables support for systems with more than one CPU. If you have
2652 a system with only one CPU, say N. If you have a system with more
2653 than one CPU, say Y.
2655 If you say N here, the kernel will run on uni- and multiprocessor
2656 machines, but will use only one CPU of a multiprocessor machine. If
2657 you say Y here, the kernel will run on many, but not all,
2658 uniprocessor machines. On a uniprocessor machine, the kernel
2659 will run faster if you say N here.
2661 People using multiprocessor machines who say Y here should also say
2662 Y to "Enhanced Real Time Clock Support", below.
2664 See also the SMP-HOWTO available at
2665 <http://www.tldp.org/docs.html#howto>.
2667 If you don't know what to do here, say N.
2670 bool "Support for hot-pluggable CPUs"
2671 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2673 Say Y here to allow turning CPUs off and on. CPUs can be
2674 controlled through /sys/devices/system/cpu.
2675 (Note: power management support will enable this option
2676 automatically on SMP systems. )
2677 Say N if you want to disable CPU hotplug.
2682 config SYS_SUPPORTS_MIPS_CMP
2685 config SYS_SUPPORTS_MIPS_CPS
2688 config SYS_SUPPORTS_SMP
2691 config NR_CPUS_DEFAULT_4
2694 config NR_CPUS_DEFAULT_8
2697 config NR_CPUS_DEFAULT_16
2700 config NR_CPUS_DEFAULT_32
2703 config NR_CPUS_DEFAULT_64
2707 int "Maximum number of CPUs (2-256)"
2710 default "4" if NR_CPUS_DEFAULT_4
2711 default "8" if NR_CPUS_DEFAULT_8
2712 default "16" if NR_CPUS_DEFAULT_16
2713 default "32" if NR_CPUS_DEFAULT_32
2714 default "64" if NR_CPUS_DEFAULT_64
2716 This allows you to specify the maximum number of CPUs which this
2717 kernel will support. The maximum supported value is 32 for 32-bit
2718 kernel and 64 for 64-bit kernels; the minimum value which makes
2719 sense is 1 for Qemu (useful only for kernel debugging purposes)
2720 and 2 for all others.
2722 This is purely to save memory - each supported CPU adds
2723 approximately eight kilobytes to the kernel image. For best
2724 performance should round up your number of processors to the next
2727 config MIPS_PERF_SHARED_TC_COUNTERS
2731 # Timer Interrupt Frequency Configuration
2735 prompt "Timer frequency"
2738 Allows the configuration of the timer frequency.
2741 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2744 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2747 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2750 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2753 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2756 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2759 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2762 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2766 config SYS_SUPPORTS_24HZ
2769 config SYS_SUPPORTS_48HZ
2772 config SYS_SUPPORTS_100HZ
2775 config SYS_SUPPORTS_128HZ
2778 config SYS_SUPPORTS_250HZ
2781 config SYS_SUPPORTS_256HZ
2784 config SYS_SUPPORTS_1000HZ
2787 config SYS_SUPPORTS_1024HZ
2790 config SYS_SUPPORTS_ARBIT_HZ
2792 default y if !SYS_SUPPORTS_24HZ && \
2793 !SYS_SUPPORTS_48HZ && \
2794 !SYS_SUPPORTS_100HZ && \
2795 !SYS_SUPPORTS_128HZ && \
2796 !SYS_SUPPORTS_250HZ && \
2797 !SYS_SUPPORTS_256HZ && \
2798 !SYS_SUPPORTS_1000HZ && \
2799 !SYS_SUPPORTS_1024HZ
2805 default 100 if HZ_100
2806 default 128 if HZ_128
2807 default 250 if HZ_250
2808 default 256 if HZ_256
2809 default 1000 if HZ_1000
2810 default 1024 if HZ_1024
2813 def_bool HIGH_RES_TIMERS
2815 source "kernel/Kconfig.preempt"
2818 bool "Kexec system call"
2821 kexec is a system call that implements the ability to shutdown your
2822 current kernel, and to start another kernel. It is like a reboot
2823 but it is independent of the system firmware. And like a reboot
2824 you can start any kernel with it, not just Linux.
2826 The name comes from the similarity to the exec system call.
2828 It is an ongoing process to be certain the hardware in a machine
2829 is properly shutdown, so do not be surprised if this code does not
2830 initially work for you. As of this writing the exact hardware
2831 interface is strongly in flux, so no good recommendation can be
2835 bool "Kernel crash dumps"
2837 Generate crash dump after being started by kexec.
2838 This should be normally only set in special crash dump kernels
2839 which are loaded in the main kernel with kexec-tools into
2840 a specially reserved region and then later executed after
2841 a crash by kdump/kexec. The crash dump kernel must be compiled
2842 to a memory address not used by the main kernel or firmware using
2845 config PHYSICAL_START
2846 hex "Physical address where the kernel is loaded"
2847 default "0xffffffff84000000" if 64BIT
2848 default "0x84000000" if 32BIT
2849 depends on CRASH_DUMP
2851 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2852 If you plan to use kernel for capturing the crash dump change
2853 this value to start of the reserved region (the "X" value as
2854 specified in the "crashkernel=YM@XM" command line boot parameter
2855 passed to the panic-ed kernel).
2858 bool "Enable seccomp to safely compute untrusted bytecode"
2862 This kernel feature is useful for number crunching applications
2863 that may need to compute untrusted bytecode during their
2864 execution. By using pipes or other transports made available to
2865 the process as file descriptors supporting the read/write
2866 syscalls, it's possible to isolate those applications in
2867 their own address space using seccomp. Once seccomp is
2868 enabled via /proc/<pid>/seccomp, it cannot be disabled
2869 and the task is only allowed to execute a few safe syscalls
2870 defined by each seccomp mode.
2872 If unsure, say Y. Only embedded should say N here.
2874 config MIPS_O32_FP64_SUPPORT
2875 bool "Support for O32 binaries using 64-bit FP"
2876 depends on 32BIT || MIPS32_O32
2878 When this is enabled, the kernel will support use of 64-bit floating
2879 point registers with binaries using the O32 ABI along with the
2880 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2881 32-bit MIPS systems this support is at the cost of increasing the
2882 size and complexity of the compiled FPU emulator. Thus if you are
2883 running a MIPS32 system and know that none of your userland binaries
2884 will require 64-bit floating point, you may wish to reduce the size
2885 of your kernel & potentially improve FP emulation performance by
2888 Although binutils currently supports use of this flag the details
2889 concerning its effect upon the O32 ABI in userland are still being
2890 worked on. In order to avoid userland becoming dependant upon current
2891 behaviour before the details have been finalised, this option should
2892 be considered experimental and only enabled by those working upon
2900 select OF_EARLY_FLATTREE
2907 prompt "Kernel appended dtb support" if USE_OF
2908 default MIPS_NO_APPENDED_DTB
2910 config MIPS_NO_APPENDED_DTB
2913 Do not enable appended dtb support.
2915 config MIPS_ELF_APPENDED_DTB
2918 With this option, the boot code will look for a device tree binary
2919 DTB) included in the vmlinux ELF section .appended_dtb. By default
2920 it is empty and the DTB can be appended using binutils command
2923 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2925 This is meant as a backward compatiblity convenience for those
2926 systems with a bootloader that can't be upgraded to accommodate
2927 the documented boot protocol using a device tree.
2929 config MIPS_RAW_APPENDED_DTB
2930 bool "vmlinux.bin or vmlinuz.bin"
2932 With this option, the boot code will look for a device tree binary
2933 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2934 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2936 This is meant as a backward compatibility convenience for those
2937 systems with a bootloader that can't be upgraded to accommodate
2938 the documented boot protocol using a device tree.
2940 Beware that there is very little in terms of protection against
2941 this option being confused by leftover garbage in memory that might
2942 look like a DTB header after a reboot if no actual DTB is appended
2943 to vmlinux.bin. Do not leave this option active in a production kernel
2944 if you don't intend to always append a DTB.
2948 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2949 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2952 default MIPS_CMDLINE_FROM_BOOTLOADER
2954 config MIPS_CMDLINE_FROM_DTB
2956 bool "Dtb kernel arguments if available"
2958 config MIPS_CMDLINE_DTB_EXTEND
2960 bool "Extend dtb kernel arguments with bootloader arguments"
2962 config MIPS_CMDLINE_FROM_BOOTLOADER
2963 bool "Bootloader kernel arguments if available"
2965 config MIPS_CMDLINE_BUILTIN_EXTEND
2966 depends on CMDLINE_BOOL
2967 bool "Extend builtin kernel arguments with bootloader arguments"
2972 config LOCKDEP_SUPPORT
2976 config STACKTRACE_SUPPORT
2980 config HAVE_LATENCYTOP_SUPPORT
2984 config PGTABLE_LEVELS
2986 default 3 if 64BIT && !PAGE_SIZE_64KB
2989 source "init/Kconfig"
2991 source "kernel/Kconfig.freezer"
2993 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3001 bool "Support for PCI controller"
3002 depends on HW_HAS_PCI
3005 Find out whether you have a PCI motherboard. PCI is the name of a
3006 bus system, i.e. the way the CPU talks to the other stuff inside
3007 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3011 bool "Support for HT-linked PCI"
3013 depends on CPU_LOONGSON3
3017 Loongson family machines use Hyper-Transport bus for inter-core
3018 connection and device connection. The PCI bus is a subordinate
3019 linked at HT. Choose Y for Loongson-3 based machines.
3024 config PCI_DOMAINS_GENERIC
3027 config PCI_DRIVERS_GENERIC
3028 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3031 config PCI_DRIVERS_LEGACY
3032 def_bool !PCI_DRIVERS_GENERIC
3033 select NO_GENERIC_PCI_IOPORT_MAP
3035 source "drivers/pci/Kconfig"
3038 # ISA support is now enabled via select. Too many systems still have the one
3039 # or other ISA chip on the board that users don't know about so don't expect
3040 # users to choose the right thing ...
3047 depends on HW_HAS_EISA
3049 select GENERIC_ISA_DMA
3051 The Extended Industry Standard Architecture (EISA) bus was
3052 developed as an open alternative to the IBM MicroChannel bus.
3054 The EISA bus provided some of the features of the IBM MicroChannel
3055 bus while maintaining backward compatibility with cards made for
3056 the older ISA bus. The EISA bus saw limited use between 1988 and
3057 1995 when it was made obsolete by the PCI bus.
3059 Say Y here if you are building a kernel for an EISA-based machine.
3063 source "drivers/eisa/Kconfig"
3066 bool "TURBOchannel support"
3067 depends on MACH_DECSTATION
3069 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3070 processors. TURBOchannel programming specifications are available
3072 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3074 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3075 Linux driver support status is documented at:
3076 <http://www.linux-mips.org/wiki/DECstation>
3082 config ARCH_MMAP_RND_BITS_MIN
3086 config ARCH_MMAP_RND_BITS_MAX
3090 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3093 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3100 select MIPS_EXTERNAL_TIMER
3108 source "drivers/pcmcia/Kconfig"
3111 tristate "RapidIO support"
3115 If you say Y here, the kernel will include drivers and
3116 infrastructure code to support RapidIO interconnect devices.
3118 source "drivers/rapidio/Kconfig"
3122 menu "Executable file formats"
3124 source "fs/Kconfig.binfmt"
3129 config MIPS32_COMPAT
3135 config SYSVIPC_COMPAT
3139 bool "Kernel support for o32 binaries"
3141 select ARCH_WANT_OLD_COMPAT_IPC
3143 select MIPS32_COMPAT
3144 select SYSVIPC_COMPAT if SYSVIPC
3146 Select this option if you want to run o32 binaries. These are pure
3147 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3148 existing binaries are in this format.
3153 bool "Kernel support for n32 binaries"
3156 select MIPS32_COMPAT
3157 select SYSVIPC_COMPAT if SYSVIPC
3159 Select this option if you want to run n32 binaries. These are
3160 64-bit binaries using 32-bit quantities for addressing and certain
3161 data that would normally be 64-bit. They are used in special
3168 default y if MIPS32_O32 || MIPS32_N32
3173 menu "Power management options"
3175 config ARCH_HIBERNATION_POSSIBLE
3177 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3179 config ARCH_SUSPEND_POSSIBLE
3181 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3183 source "kernel/power/Kconfig"
3187 config MIPS_EXTERNAL_TIMER
3190 menu "CPU Power Management"
3192 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3193 source "drivers/cpufreq/Kconfig"
3196 source "drivers/cpuidle/Kconfig"
3200 source "net/Kconfig"
3202 source "drivers/Kconfig"
3204 source "drivers/firmware/Kconfig"
3208 source "arch/mips/Kconfig.debug"
3210 source "security/Kconfig"
3212 source "crypto/Kconfig"
3214 source "lib/Kconfig"
3216 source "arch/mips/kvm/Kconfig"